Cearles clement walker



. (No Model.)

G. G. WALKER. LID FOR GAS RE'TORTS.

No. 522,137. Patented June 26, 1894.

filler/z for; @1144 QM w 2/2171 Ufa? -l.e 1 I UNITED STATES PATENTOFF-ICE.

CHARLES CLEMENT WALKER, OF DONNINGTON, NEAR NEWPORT, ENGLAND.

LlD FOR GAS-RETORT-S.

SPECIFICATION forming part of Letters Patent No. 522,137, dated June 26,1894.

Application filed February 20, 1894-- Serial No. 500,906- (No model.)

To aZZ whom it may concern.-

Be it known that I, CHARLES CLEMENT the Lids of Gas-Retorts or the Like,of which the following is a specification.

My invention relates to the lids of retorts to which lids a slidingmovement is imparted with the object of causing the lid to rub on therim of the mouthpiece when it is closed and opened. Means for thispurpose are described in the specification of United States LettersPatent No. 331,102, dated November 24, 1885, and it is the object of myinvention to provide means whereby a more efficient rubbing action ofthe lid upon the rim of the mouthpiece is insured. To effect this I makethe eccentric boss which is upon the screw and which engages in thecorresponding recess in the lid of less depth or thickness than hithertoor than the depth of the recess and I place a flexible device such as acoiled or bow spring or springs between the lid and the cross bar whichdevice keeps the lid in contact with the rim of the mouthpiece duringthe final portion of the operation of the screw in closing themouthpiece and also during the first portion of the operation of thescrew in opening the mouthpiece and as during such times the eccentricboss gives an cecentric movement to the lid a very efficient rubbing ofthe lid on the rim of the mouthpiece is insured as the lid is by theflexible device or spring or springs caused at such portions of theoperation of the screw to keep in contact with the said rim.

The accompanying drawings show means whereby my invention may be carriedinto eifect.

Figure 1 is a plan and Fig. 2 is a section of a retort mouthpiece andlid provided with my invention and Fig. 3 is a sectional view of partthereof drawn to a larger scale. Fig. 4 is a plan showing a diiferentkind of spring.

A is the retort mouthpiece. Y B is the lid.

0 is the cross bar and D is the screw passing through the said bar forpressing the lid onto the mouthpiece. Upon this screw is the eccentricboss 01 which engages in the recess b in the lid. The said boss dis ofless thickness or depth than the depth ofthe recess b.

E is a coiled spring placed between the lid B and the cross bar (J.

F is a plate or box which takes the bearing of one end of the spring thesaid plate or box having an opening in it of sufficient size to allow ofthe working of the screw D.

In Fig. 4 I have shown a bow or fiat spring E as taking the place of thecoiled spring E the other parts being like and lettered similarly tothose shown in Figs. 1, 2 and 3. The spring E keeps the lid in contactwith the rim of the mouthpiece during the final portion of the operationof the screw in closing the mouthpiece and also during the first portionof the operation of the screw in opening the mouthpiece so that theaction of the eccentric combined with that of the spring gives a veryefficient rubbing action as afore said.

I claim- The combination with the retort mouthpiece and lid and crossbar and screw of an eccentric on the screw engaging in a recess in thelid the said recess being of greater depth than the thickness of theeccentric and of a yielding device between the lid and the cross barsubstantially as and for the purpose hereinbefore described andillustrated by the accompanying drawings.

In testimony whereof I have signed my name to this specification in thepresence of two subscribing witnesses.

CHARLES CLEMENT WALKER.

Witnesses:

WM. CHAFFER, 10 Ft'nsbury' Sqa, London, E. 0.

L. A. RUMBLE, 1 13 Beading Road, Bm'wton Hill, S. W.

